Commit-ID: cf7f46b9b12269d204b6acd0925704543adb6e05
Gitweb: https://git.kernel.org/tip/cf7f46b9b12269d204b6acd0925704543adb6e05
Author: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
AuthorDate: Mon, 8 Jan 2018 14:28:45 +0100
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 8 Jan 2018 17:57:23 +0100
clocksource/drivers/timer-of: Add kernel documentation
The current code has no comments, neither any function descriptions. Fix this by
adding function descriptions in kernel doc format.
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1515418139-23276-6-git-send-email-daniel.lezcano@xxxxxxxxxx
[ Spelling and style fixes. ]
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
drivers/clocksource/timer-of.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/drivers/clocksource/timer-of.c b/drivers/clocksource/timer-of.c
index ad55654..c1045b9 100644
--- a/drivers/clocksource/timer-of.c
+++ b/drivers/clocksource/timer-of.c
@@ -24,6 +24,12 @@
#include "timer-of.h"
+/**
+ * timer_of_irq_exit - Release the interrupt
+ * @of_irq: an of_timer_irq structure pointer
+ *
+ * Free the irq resource
+ */
static __init void timer_of_irq_exit(struct of_timer_irq *of_irq)
{
struct timer_of *to = container_of(of_irq, struct timer_of, of_irq);
@@ -34,6 +40,22 @@ static __init void timer_of_irq_exit(struct of_timer_irq *of_irq)
free_irq(of_irq->irq, clkevt);
}
+/**
+ * timer_of_irq_init - Request the interrupt
+ * @np: a device tree node pointer
+ * @of_irq: an of_timer_irq structure pointer
+ *
+ * Get the interrupt number from the DT from its definition and
+ * request it. The interrupt is gotten by falling back the following way:
+ *
+ * - Get interrupt number by name
+ * - Get interrupt number by index
+ *
+ * When the interrupt is per CPU, 'request_percpu_irq()' is called,
+ * otherwise 'request_irq()' is used.
+ *
+ * Returns 0 on success, < 0 otherwise
+ */
static __init int timer_of_irq_init(struct device_node *np,
struct of_timer_irq *of_irq)
{
@@ -72,6 +94,12 @@ static __init int timer_of_irq_init(struct device_node *np,
return 0;
}
+/**
+ * timer_of_clk_exit - Release the clock resources
+ * @of_clk: a of_timer_clk structure pointer
+ *
+ * Disables and releases the refcount on the clk
+ */
static __init void timer_of_clk_exit(struct of_timer_clk *of_clk)
{
of_clk->rate = 0;
@@ -79,6 +107,15 @@ static __init void timer_of_clk_exit(struct of_timer_clk *of_clk)
clk_put(of_clk->clk);
}
+/**
+ * timer_of_clk_init - Initialize the clock resources
+ * @np: a device tree node pointer
+ * @of_clk: a of_timer_clk structure pointer
+ *
+ * Get the clock by name or by index, enable it and get the rate
+ *
+ * Returns 0 on success, < 0 otherwise
+ */
static __init int timer_of_clk_init(struct device_node *np,
struct of_timer_clk *of_clk)
{
--
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